I was able to clone from GitHub just now. However, I did it from a DEV build that's NEWER than the EA3 copy that you folks have. Internally we've been testing from a in-house GIT repository. I will endeavor to get this working in the EA3 to confirm what you have should work too, but for now this is all I can personally confirm or attest to.

So, I tried again and I can clone a Bitbucket repo from HTTPS fine but not from SSH. For SSH, I tried unauthenticated, authenticated with name / pass, and authenticated with a key. On Github, I can clone unauthenticated both ways but cannot clone if using SSH auth. I have tried this from Windows and Mac both.